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Simultaneously phase-matched blue and red light generation using BIBO.

Kentaro Miyata1, Nobuhiro Umemura, Kiyoshi Kato

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Bismuth borate (BiB3O6) crystals enable simultaneous blue and red light generation via temperature-insensitive phase matching. Tuning the light

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Area of Science:

  • Nonlinear optics
  • Solid-state laser technology
  • Materials science

Background:

  • Phase matching is crucial for efficient nonlinear optical processes like sum-frequency generation.
  • Bismuth borate (BiB3O6) is a nonlinear optical crystal with potential applications in laser technology.
  • Simultaneous generation of multiple wavelengths can lead to compact and versatile laser systems.

Purpose of the Study:

  • To investigate the simultaneous phase-matchable sum-frequency generation of blue and red light in BiB3O6.
  • To explore temperature-insensitive phase-matching conditions for efficient light generation.
  • To demonstrate the tunability and control of blue and red light output for potential laser applications.

Main Methods:

  • Utilizing a parametric oscillator pumped at 0.5321 microm and a fundamental source at 1.0642 microm.
  • Mixing optical outputs to achieve sum-frequency generation in BiB3O6.
  • Employing temperature-insensitive phase-matching and varying azimuth angles to control nonlinear constants.

Main Results:

  • Achieved simultaneous phase matching for sum-frequency generation at 0.4627 microm (blue) and 0.6260 microm (red).
  • Demonstrated temperature-insensitive phase-matching conditions for stable light generation.
  • Showcased control over the relative strength of blue and red light by adjusting the azimuth angle.
  • Obtained wide wavelength tuning using a noncollinear geometry.

Conclusions:

  • BiB3O6 is a viable material for simultaneous blue and red light generation.
  • Temperature-insensitive phase matching simplifies device operation and enhances stability.
  • The ability to tune and control light output enables the development of compact red-green-blue laser systems.